KR101367186B1 - Bare-foot wear - Google Patents

Abstract

Disclosed barefoot wear includes a flexible thin outsole which has one or more protective layers with patterns with an interval on a flexible base, and leather upper which is connected to the outsole and has a space for accommodating a foot and a foot entrance. The barefoot wear protects the sole of a foot and providing wearing sensation similar to barefoot sensation.

Description

Barefoot Wear {bare-foot wear}

The present invention is directed to barefoot wear that can provide similar or equivalent effects to barefoot walking.

Shoes reduce the impact transmitted through the foot when walking and protect the foot from various risk factors. In view of this, walking, running, climbing, etc. generally wear walking shoes, running shoes, hiking shoes, etc., which are suitable for a purpose.

By the way, the human toes have five toes straight and open to each other, keeping the length of the military. Footwear developed to protect the foot is often developed with a focus on design rather than function or function, and in some cases adversely affects the foot causing disease. For example, in the case of running shoes, the front width is narrowed and pointed to make the exterior look stylish, and a thick cushion is placed on the floor to reduce the impact.The feet are held in thick shoes, and the toes are bent, bent, and abut each other. The malformed shape can be deformed. Women's high heels are an extreme example of poor foot function. As he starts to wear shoes, his toes show signs of degeneration. Three toes are normal, and there are many who degenerate two toes of the little toe and the fourth toe. Degeneration of the toes can lead to decreased walking ability. An example of degeneration is a hallux valgus with the big toe bent inward, a hammer foot with the toe joint bent in the form of a hammer, and an indentation in which the toenail's claws pierce the edge of the foot. In addition, a decrease in sweat output due to the restraint of the foot may cause foot diseases such as athlete's foot.

Recently, as interest in health increases, barefoot walking has been in the spotlight. Barefoot walking has no foot restraint and naturally stimulates the nerves and muscles of the sole of the foot. According to the latest issue of Nature, researchers led by Harvard University professor Daniel Lieberman scientifically analyzed the effects of foot health when running barefoot. As a result, if you want to run well, you have to take off your running shoes and run barefoot. This goes beyond what we know about jogging. Lieberman examined the effects of gait on the feet of three groups of sneakers, barefoot, and barefoot sneakers. First, three-quarters of those wearing sneakers found that their heels were about 1,000 times perpendicular to the ground when they ran a mile. It is common sense that sneakers absorb the impact of the heel and sole of the foot on the ground and distribute it evenly across the front of the foot, but experiments show that 30-75% of people who wear sneakers suffer from repeated foot pain each year. Barefoot groups, on the other hand, were found to run using foot balls protruding from the side of the foot and the front of the foot, rather than avoiding the heel heel state, the researchers say. The analysis confirms that bare feet are much more comfortable and not subject to repetitive stress damage caused by impacts.

If you run barefoot, you land on the front of the foot, where the calf muscles are strongly contracted and the calf medullary veins squeeze the blood up. The calf muscles are released from tension until they push the ground with their feet and pull it forward again. The blood comes up filling the calf vein where the blood pressure drops. Your feet are farthest from the heart, so you have to beat gravity to get your blood up to your thighs. The landing in front of the bare feet pumps blood to help blood circulation. In addition, barefoot walking uses the entire plantar muscle to maintain balance, resulting in high motor effects and reinforced toes to help prevent injuries. In addition, the nerve stimulation of the entire sole of the foot has the effect of improving the parallelism and balance of the body. In addition, unlike sneakers that fill the arch of the sole with elastic materials, barefoot walking can reduce the fatigue level compared to wearing sneakers where the foot is restrained by enabling shock absorbing and repelling function, which is a function of the sole of the sole. have.

As described above, walking or running barefoot has many advantages, but walking barefoot can cause injury by stones, twigs, sharp objects, etc., and there is a risk of infection. There is a risk of getting frostbite, and if you keep walking barefoot on your feet, you can get a hard dead skin on your soles, and if you manage them incorrectly, your soles may crack and cause pain.

It is an object of the present invention to provide a barefoot wear which can protect the foot while giving a sense of walking or running similar to or equivalent to bare feet.

According to an aspect of the present invention, a barefoot wear includes: a flexible thin sole having one or more layers of protective layers repeatedly arranged with a plurality of hard unit patterns spaced apart from each other to protect the soles on the flexible base; And an upper formed with a foot opening through which the foot is connected to the sole to form a space in which the foot is accommodated together with the inner surface of the sole.

The sole may have two or more layers of the protective layer.

When two or more layers of the protective layer are provided, the two or more layers may be overlapped with each other so that the unit patterns provided in the adjacent protective layers are arranged to be offset from each other.

The base may be formed of a fabric.

The upper may be formed of a fabric of span material.

The upper may be formed of an elastic material.

According to the present invention described above, while maintaining the flexibility of the base forming the sole, it is possible to reduce the risk of damage to the foot by a sharp object on the ground, it is possible to implement a barefoot wear with a lightweight and close to bare feet. Activation of blood circulation by landing using the front part of the foot, strengthening the muscles by using the entire plantar muscle and reducing fatigue and long-term exercise effect, improving balance and balance through stimulation of the plantar nerve, reducing fatigue In addition, the safety of the foot can be realized while the effect of walking barefoot, such as the deformation of the toe and the reduction of the disease risk.

1 and 2 are a top perspective view and a bottom perspective view of an embodiment of a barefoot wear according to the present invention.
FIG. 3 is an enlarged view of part A of FIG. 2 and illustrates the sole protection part in detail.
4 is a schematic cross-sectional view of the sole.
5 is a schematic side view of one embodiment of a barefoot wear in accordance with the present invention.
6 is a schematic perspective view of one embodiment of a barefoot wear in accordance with the present invention employing an upper of elastic material.
7 is a schematic plan view of the sole of a barefoot wear in accordance with the present invention.
8 is a cross-sectional view of one embodiment of a barefoot wear with two layers of soles.
9 is a cross-sectional view of one embodiment of a barefoot wear with three layers of soles.
10 is a partial cross-sectional view showing another embodiment of a barefoot wear according to the present invention.
11 is a plan view illustrating an embodiment of a barefoot wear according to the present invention in which the first non-elastic portion is formed on the upper.
12 is a plan view illustrating an embodiment of a barefoot wear according to the present invention in which a second non-elastic portion is formed on the upper.
Figure 13 is a plan view showing another embodiment of the barefoot wear according to the invention the second non-elastic portion is formed on the upper.
Figure 14 is a plan view showing an embodiment of a barefoot wear in accordance with the present invention the toe protector is formed on the upper.

Hereinafter, embodiments of the barefoot wear according to the present invention will be described with reference to the drawings. The width and thickness of the layers or regions shown in the accompanying drawings are somewhat exaggerated for clarity. Like numbers refer to like elements throughout.

1 is a top perspective view of one embodiment of a barefoot wear in accordance with the present invention. 2 is a bottom perspective view of one embodiment of a barefoot wear in accordance with the present invention. FIG. 3 is an enlarged view of part A of FIG. 2 and illustrates the sole protection part in detail. 4 is a schematic cross-sectional view of the sole. In the present specification, barefoot wear is used as a term for shoes that provide a feeling of wearing similar to barefoot walking as distinguished from general sneakers or running shoes.

1 and 2, the barefoot wear includes an upper 10 and a sole 20. The upper 10 and the sole 20 may be coupled to each other by, for example, sewing. General sneakers, running shoes, etc. use a mid sole and an insole for absorbing shock and wearing comfort, but the barefoot wear of this embodiment has a midsole to minimize the distance between the sole and the ground. Do not use artificial buffers such as soles and insoles.

2, 3, and 4, the sole 20 has one or more layers of protective layers 24 provided with the sole protection portion 22 on the base 21. For example, the sole protection part 22 may be provided on an outer surface of the base 21 facing the ground. The base 21 is formed of as thin and flexible material as possible to provide a similar or equivalent fit to bare feet. The sole protection part 22 is for protecting a foot from stones, branches, sharp objects, etc., and is formed of a hard material. The sole protection part 22 has a form in which one or two or more types of unit patterns 23 are repeatedly arranged at a distance G from each other. The flexibility of the base 21 is maintained due to the gap G between the plurality of unit patterns 23, and at the same time, the sole protection part 22 prevents a sharp object of the ground from penetrating the base 21 and injuring the sole of the foot. It protects the soles of the feet.

The base 21 may be any material such as a fabric and a flexible composite material in the form of a film as long as it is a flexible thin material. For example, the base 21 may be a high strength fabric made of extended chain polyethylene fibers, ultra high molecular weight polyethylene fibers, 3600-1,200 denier aramids, or the like. . Sole protector 22 is not particularly limited as long as it is a hard material that can withstand penetration. For example, the sole protector 22 may be formed of a thermoplastic material such as high density polyethylene, low density polyethylene, ethylene vinyl acetate, or the like. For example, heat may be applied while passing the transfer paper of the film form in which the plurality of unit patterns 23 are repeatedly arranged at intervals 23 and passed between the rollers pressed together with the base 21. As a result, the sole protection part 22 can be formed by thermally transferring the plurality of patterns 23 to the base 21. The thickness of the sole 20 manufactured thereby may be, for example, about 0.5 to 0.6 mm, including the base 21 and the sole protection part 22.

In FIG. 3, the hexagonal unit pattern 23 is illustrated as an example, but the scope of the present invention is not limited thereto. For example, the unit pattern may be in the form of a polygon such as a triangle, a square, a pentagon, or a closed curve including a curved portion. The unit patterns do not necessarily have to be the same size, and only one type of unit pattern need not be arranged. The gap G is used so that the base 21 does not lose its flexibility due to the plurality of hard unit patterns 23. For example, at least the gap G may be smaller than the equivalent diameter of the unit pattern 23. Equivalent diameter refers to the diameter of a circle having the same area as the closed curve or polygon.

The upper 10 is connected to the sole 20 to form a space in which the foot is accommodated together with the inner surface of the base 21. Upper 10 may wrap the instep entirely or partially from the side of the foot. The upper 10 is provided with an inlet 11 through which the foot passes in order to wear barefoot wear. The upper 10 may be formed of a thin fabric, a mesh of fabric, or the like, to reduce the weight of the barefoot wear as a whole. Upper 10 may be formed of, for example, a resilient fabric, such as a spantex fabric of stretchable fiber comprising polyurethane. For example, the upper 10 may be formed of a mesh woven of polyester-CDP (Cation dyeable poltester) blend, polyester-nylon blend, or the like. In addition, the upper 10 may be formed of an elastic mesh in which a part of polyurethane (polyurethane) fiber is added to the above-described mesh.

Upper 10 may be formed to wrap around the ankle joint. The periphery of the inlet 11 may be, for example, treated to prevent loosening by sewing so that the fabric of the upper 10 is not loosened.

By forming the upper 10 and the sole 20 into a fabric, the barefoot wear can be folded and carried in a small volume, thereby improving portability.

5 is a schematic side view of one embodiment of a barefoot wear in accordance with the present invention. As shown in FIG. 5, the portions corresponding to both sides of the foot may have a concave shape about 20 mm downward from the portions corresponding to the front and back of the foot. An ignition handle 12 may be provided at a portion corresponding to the heel of the inlet 11.

As shown in FIG. 6, the upper 10 may be formed of an elastic material. The elastic material may be, for example, thermoplastic polyurethane (TPU). Thermoplastic polyurethanes have elasticity, transparency, and resistance to oil, grease, and abrasion. Thermoplastic polyurethanes are copolymers composed of hard segments and soft segments and can be prepared to have desired properties by changing the structure and / or molecular weight of the reaction compound.

The upper 10 and the sole 20 made of elastic material may be bonded using an adhesive such as epoxy. In addition, the upper 10 and the sole 20 made of an elastic material may be coupled to each other by an in molding method. For example, the sole 20 may be inserted into a molding die for molding the upper 10, and an elastic material may be injected to form a single body. In the molding process, the edge of the sole 20 and the edge of the upper 10 may be bonded to each other. According to this, since the upper 10 and the sole 20 made of an elastic material are integrated in the molding process, no additional bonding process is required.

The upper 10 made of an elastic material is a so-called jelly upper, which is light and can easily produce various color tones, and its shape can also be freely molded. Therefore, the upper 10 can be manufactured with excellent aesthetic elements. In addition, when the upper 10 is molded, the ventilation holes 19 may be provided partially or entirely to impart breathability and sweat discharge characteristics.

Since barefoot wear should provide a fit that is equivalent to or similar to barefoot walking, it is desirable to avoid restraining the foot if possible. In particular, since the front of the foot first touches the ground when walking or running wearing barefoot wear according to the present invention, it is preferable that the front of the foot is free to move freely.

7 shows a schematic plan view of the sole 20 of a barefoot wear in accordance with the present invention. Referring to FIG. 7, the front region 20a corresponding to the ball of foot of the sole 20, that is, the head of metatarsal and the region corresponding to the front of the foot (so-called toe box) The width of)) can be made larger than the width of the toe to avoid constraining the toe. For example, the front region 20a corresponding to the ball of foot of the sole 20 is about 1.2 to 1.5 times its width, considering the total width of the toe that is opened while the width of the sole 20 stands up barefoot. For example, it may be formed to about 1.3 times. The upper region 10 also corresponds to the ball of the foot (ball of foot) is formed in accordance with the shape and size of the sole 20.

The area from the metatarsal head to the heel is slightly smaller or slightly larger than the foot circumference, for example, about 95% of the foot circumference of the barefoot wear formed by the sole 20 and the upper 10. It may be formed to about 105%.

The weight of the barefoot wear manufactured by the above-described configuration may be, for example, about 25-30 g. Considering that the weight of a commercially available ultra-light walking shoe is about 125-200g, the barefoot wear according to the present invention has a weight of about 1/4, and the sole 20 also has a thickness of, for example, about It is about 0.5 ~ 0.6mm and very thin. According to the barefoot wear according to the present invention, the sole and the ground are in close contact with each other while maintaining a large contact area through the thin and flexible sole 20. By providing a hard sole protector 22 in the sole 20, the risk of sharp objects on the ground penetrating the sole 20 and hurting the sole during barefoot walking or running can be reduced. In addition, by adopting the sole protection part 22 in which the plurality of unit patterns 23 are arranged at intervals, the flexibility of the base 21 can be maintained, and a feeling of wearing close to bare feet can be formed. Therefore, when wearing other barefoot wear according to the present invention, while reducing the risk of damage to the foot by the sharp object of the ground and lowering of body temperature, etc., it can be implemented by walking barefoot, for example, using the front part of the foot Activation of blood circulation by landing, strengthening muscles by using the entire plantar muscles, reducing fatigue and improving exercise effects due to long-term exercise, improving balance and balance through stimulation of plantar nerves, reducing fatigue, restraining toes It can realize the effects such as deformation and reduction of disease risk.

Although the sole 20 having one layer of protective layer 24 is shown in FIG. 4, the scope of the present invention is not limited thereto. As shown in FIG. 8, the sole 20-1 may be formed by two layers of the protective layers 24a and 24b. The protective layers 24a and 24b may be formed by the bases 21a and 21b and the sole protection parts 22a and 22b. The two-ply bases 21a and 21b may be coupled to each other by sewing, or may be coupled by adhesion. The gaps Ga and Gb of the sole protection parts 22a and 22b may be the same or may be different. As shown in FIG. 8, the two-ply bases 21a and 21b and the sole protection parts 22a and 22b overlap each other such that the unit patterns 23a and 23b are disposed to be offset from each other. Accordingly, even if the sharp object of the ground penetrates the base 21b through the gap Gb of the sole protection portion 22b disposed on the outside, the sole 20-1 is blocked by the inner sole protection portion 22a. ) Can reduce the risk of total penetration.

Furthermore, as shown in FIG. 9, the sole 20-2 may include three layers of protective layers 24a, 24b, and 24c. The protective layers 24a, 24b, and 24c may be formed by the bases 21a, 21b and 21c and the sole protection parts 22a, 22b and 22c. The three-ply bases 21a, 21b, and 21c may be coupled to each other by sewing, or may be combined by adhesion. The intervals Ga, Gb, and Gc of the sole protection parts 22a, 22b, and 22c may be the same or may be different. It is preferable that the three layers of bases 21a, 21b, 21c and the sole protection parts 22a, 22b, 22c overlap each other so that the unit patterns 23a, 23b, 23c are disposed to be offset from each other. That is, the three-ply bases 21a, 21b and 21c and the sole protection parts 22a, 22b and 22c are arranged in such a way as to reduce the possibility that the gaps Ga, Gb and Gc are aligned in the vertical direction. Can be. For example, as illustrated in FIG. 9, the unit patterns 23a and 23c disposed on the outside may be aligned with each other, and the unit patterns 23b disposed therebetween may be disposed to be offset from the unit patterns 23a and 23c. have. As a result, it is possible to further reduce the risk that the sole 20-2 is entirely penetrated.

As described above, even if the sole 20-1 (20-2) of the two-ply or three-ply structure is adopted, the thickness thereof is only about 1.5 to 1.8 mm and the flexibility of the soles 20-1 and 20-2. This ensures a similar fit to bare feet.

As described above with reference to FIG. 7, the front region 20a of the sole 20 is formed to be about 1.2 to 1.5 times the total width of the toes that are opened in a state where the width of the sole 20 stands up barely, thereby not restraining the toes. It is formed in the form. Accordingly, the upper 10 may also be formed so as not to restrain the foot in a region corresponding to the front region 20a of the sole 20.

10 is a cross-sectional view of another embodiment of a barefoot wear according to the present invention. Referring to FIG. 10, the sole 20 may further include a wear protection layer 25. The wear protection layer 25 may be formed of a material having excellent wear resistance, for example, an aramid-based material such as Kevlar. The wear protection layer 25 may be provided on the outer side of the protective layer 24 formed by the base 21 and the sole protection part 22, that is, the side facing the ground. The wear protection layer 25 may be coupled to the protective layer 24 by, for example, sewing or bonding. In addition, the sole 20 including the protective layer 24 and the wear protection layer 25 may be coupled to the upper 10 by a method such as sewing, bonding, or molding. In addition, the inner skin 26 may be disposed inside the protective layer 24. Endothelial 26 may be formed of a variety of materials, such as a fabric that can give a soft touch to the sole, elastic materials and mixed materials combined with the fabric. Due to the characteristics of barefoot wear, the endothelium 26 is preferably as thin as possible. The wear protection layer 24 and the endothelium 26 of this embodiment may also be applied to the soles 20-1 and 20-2 of the two-ply or three-ply structure shown in FIGS. 9 and 10.

11 is a plan view showing another embodiment of a barefoot wear in accordance with the present invention. Referring to FIG. 11, the upper 10-1 is an area corresponding to the foot ball from the tip of the toe and is connected to the first non-elastic portion 10a formed of an inelastic fabric and the first non-elastic portion 10b and the foot passes therethrough. The region in which the inlet 11 is formed may include an elastic portion 10b formed of an elastic fabric. When the barefoot wear is worn, the upper 10-1 gently wraps both sides of the foot and the back of the foot by the elasticity of the elastic part 10b. However, since the first non-elastic portion 10a is not elastic, no pressure is applied to the front portion of the foot. Therefore, the toes are not restrained in the barefoot wear because they are not subjected to the force of gathering inwardly from the side by the barefoot wear and can be kept free. When stepping on your feet, your toes are naturally unopened and are very flexible, supporting your weight in a very flexible way, helping to keep your fit close to your bare feet. In addition, since the toes are free, even when walking for a long time, the fatigue of the foot can be reduced.

12 is a plan view showing another embodiment of a barefoot wear in accordance with the present invention. The embodiment shown in FIG. 12 is different from the embodiment shown in FIG. 11 in that it further includes a second elastic portion 10c. 12, the upper 10-2 further includes a second non-elastic portion 10c extending from the first non-elastic portion 10a toward the inlet 11 across the elastic portion 10b. The second non-elastic portion 10c is formed of a non-elastic fabric, the shape may be in the form of a band extending in the longitudinal direction of the barefoot wear as shown in FIG. In FIG. 12, the second non-elastic portion 10c is connected to the inlet 11 from the first non-elastic portion 10a, but the scope of the present invention is not limited thereto. The second non-elastic portion 10c does not necessarily need to be connected to the first non-elastic portion 10a and the inlet 11, and the compressive force of the elastic portion 10b between the first non-elastic portion 10a and the inlet 11 is provided. It can be formed to an appropriate length to the extent that can be reduced to an appropriate level.

The second non-elastic portion 10c reduces the longitudinal force of the compressive force applied to the foot by the elastic portion 10b, and serves as a support for maintaining the shape of the barefoot wear in the longitudinal direction. Therefore, by providing the second non-elastic portion (10c) it is possible to reduce the compressive force applied to the toes in the longitudinal direction to keep the toes more free.

 The shape of the second non-elastic portion 10c is not limited to the example shown in FIG. 12. For example, as shown in FIG. 11, the second non-elastic portion 10c is spaced apart in the width direction of the bare foot wear, and a pair of inelastic force connecting the inlet 11 and the first non-elastic portion 10a, respectively. It may be implemented by a band of fabric (10c-1) (10c-2). The shape of the second non-elastic portion 10c does not completely exclude the shape extending in the width direction of the bare foot wear. For example, as illustrated by a dotted line in FIG. 13, the second non-elastic portion 10c extends in the width direction of the barefoot wear to connect a pair of bands 10c-1 and 10c-2. -3) may be further included. That is, the second non-elastic portion 10c may be implemented in various forms that may extend in the longitudinal direction of the barefoot wear as a whole and effectively maintain the shape of the barefoot wear in the longitudinal direction.

14 is a plan view showing another embodiment of a barefoot wear in accordance with the present invention. The embodiment shown in FIG. 14 differs from the embodiment shown in FIG. 12 in that it further includes a toe protector 10d.

14, a portion of the upper 10-3, that is, a region corresponding to the big toe, is provided with a toe protection portion 10d thicker than the other region of the upper 10-3. The toe protector 10d may be formed of, for example, a material capable of protecting any toe from external impact, such as thick fabric or artificial leather, as compared to other areas of the upper 10-3. In addition, the toe protector 10d may be formed by applying one or more layers of fabric, artificial leather, or the like to a region corresponding to the big toe. The toe protector 10d may also be applied to the embodiment shown in FIGS. 1 to 11 and 13.

In the case of walking or running, the front of the foot first touches the ground, and the longest big toe is most likely to hit an obstacle ahead. Therefore, by providing the toe protector 10d in an area corresponding to the big toe of the upper 10, the risk of injury of the big toe can be reduced.

Although a number of matters have been specifically described in the above description, they should be interpreted as examples of preferred embodiments rather than limiting the scope of the invention. Therefore, the scope of the present invention is not to be determined by the described embodiments but should be determined by the technical idea described in the claims.

10, 10-1, 10-2, 10-3 ... Upper 10a ... First non-elastic part
10b ... Resilient part 10c ... 2nd non-elastic part
11.Inlet 12.Ignition handle
20, 20-1, 20-2 ... sole 21, 21a, 21b, 21c ... base
22, 22a, 22b, 22c ... Foot protection 23, 23a, 23b, 23c unit pattern
24, 24a, 24b, 24c ... protective layer G, Ga, Gb, Gc ... spacing

Claims (6)

delete delete A flexible thin sole having two or more layers of protective layers repeatedly arranged with a plurality of hard unit patterns spaced apart from each other to protect the soles on the flexible base;
And an upper connected to the sole to form a space in which the foot is accommodated together with the inner surface of the sole and having an inlet through which the foot passes.
When the protective layer is provided with two or more layers, the two or more protective layers overlap each other such that the unit patterns provided in the adjacent protective layers are arranged to be offset from each other. The method of claim 3,
The base is barefoot wear formed of a fabric. The method according to claim 3 or 4,
The upper is barefoot wear is formed of a span material fabric. The method according to claim 3 or 4,
The upper is barefoot wear formed of an elastic material.

Images